Protocols

Governing Data Transmission

Emails

SMTP, POP, IMAP

In your notebooks:

What do they each stand for? 

What's the difference between POP and IMAP?

Voice Calls

• Session Initiation Protocol (SIP)
• Real-time Transport Protocol (RTP)
• Real-time Transport Control Protocol (RTCP)

In your notebooks, what does each of these protocols control? 

Video Calls

• H.323
• SIP
• RTP

Web Pages

• HTTP
• HTTPS

What do they stand for? 

What does the 'S' add to HTTP? 

Secure Payment Systems

• Secure Socket Layer
• Transport Layer Security

Exam Questions

1. Joanna is a business executive who uses email as her main means of communication. As she has to travel a lot she needs to use her email on several different devices. 

Evaluate the protocols used for receiving emails and which would be most useful for Joanna. 

Exam Questions

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2. The school has just upgraded its broadband to 200Mbps, but the speed that pupils can access the internet from their laptops in the classroom has remained as slow as it was before the upgrade.

Describe 5 factors that can be impacting on how fast the internet works for the students. (10)

Plenary

Explain this chain of events:

Give a definition for a protocol

What does an SIP do?